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Проблемы прочности, 2018, № 1
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Перегляд Проблемы прочности, 2018, № 1 за датою випуску

Перегляд Проблемы прочности, 2018, № 1 за датою випуску

Результати 1-20 з 29

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Автор відсутній (Проблемы прочности, 2018)
A Simulation Study on the Effect of Cavity Shapes on the Penetration of Linear Shaped Charges with Curved Liners

Dong, S.K.; Cui, A.Y.; Wei, H.K.; Huang, X.D.; Liu, Q.; Pei, G.X. (Проблемы прочности, 2018)

The finite element models of curved-liner shaped charges penetrating aluminum-alloy thin plates were constructed with the ANSYS/LS-DYNA software to analyze the effect of cavity shapes on the charge penetration with curved ...
Strain-Induced Precipitation Kinetics of Vanadium Carbonitride Precipitates with the Cubic Structure in High-Strength Weathering Steels

Cheng, J.; Qing, J.; Shen, H.F. (Проблемы прочности, 2018)

The strain-induced precipitation kinetic model of vanadium carbonitride [V(C, N)] precipitates with the cubic structure in vanadium-nitrogen (V–N) microalloyed high-strength weathering steels was constructed and validated.
Analysis of Gas Nitriding Characteristics under Different Cold Hardening and Nitriding Pressure Conditions for Low-Carbon Low-Alloy Steel

Zhou, Z A.; Fu, W.T.; Zhang, R.H.; Qi, J.J.; Jin, G.F.; Wang, Z.H.; Sun, S.H. (Проблемы прочности, 2018)

A new approach to quick preparation of a nitrided case for low-carbon low-alloy steels was proposed. It is based on cold hardening and pressurized gas nitriding. The microstructure, surface hardness, thickness, and corrosion ...
Stacking Sequence Effect on the Fracture Behavior of Narrow L-Shaped Cross-Ply Laminates: Experimental Study

Pan, Z.Y.; Duan, Q.F.; Zhong, Y.C.; L, i S.X.; Cao, D.F. (Проблемы прочности, 2018)

The stacking sequence effect of narrow L-shaped laminates on the fracture mode was studied.
Short Fatigue Crack Behavior of LZ50 Axle Steel under Rotating-Bending Cyclic Loading

Yang, B.; Dai, S.; Wu, Y.Y.; Liao, Z.; Liang, S.; Xiao, S.N. (Проблемы прочности, 2018)

The short fatigue short crack replica tests using LZ50 axle steel hourglass-shaped specimens of were carried out under rotating-bending cyclic load. Seven sets of effective test data were obtained. The analysis demonstrated ...
Hot Extrusion Effect on the Microstructure and Mechanical Properties of a Mg–Y–Nd–Zr Alloy

Sheng, L.Y.; Du, B.N.; Wang, B.J.; Xu, D.K.; Lai, C.; Gao, Y.; Xi, T.F. (Проблемы прочности, 2018)

A Mg–Y–Nd–Zr alloy was prepared by casting and hot extrusion. The microstructure and mechanical properties of OM, SEM, XRD, TEM, and tensile tests were investigated with casting and hot extruded alloys. The results ...
Study on the Cracking Mechanism of YQ450NQR1 High-Strength Weathering Steel

Qing, J.S.; Duan, X.D.; Xiao, M.F.; Li, J.Q.; Liu, M.; Liu, Q.; Shen, H.F. (Проблемы прочности, 2018)

YQ450NQR1 high-strength weathering steel is prone to cracking. The cracking patterns and morphology were detected by metallographic and scanning electron microscopies. The decarburized layer around the cracks is indicative ...
Flexural Fracture Toughness and First-Crack Strength Tests of Steel Fiber-Silica Fume Concrete and Its Engineering Applications

Zhang, J.P.; Liu, L.M.; Zhu, Z.D.; Zhang, F.T.; Cao, J Z. (Проблемы прочности, 2018)

The effect of a steel fiber and silica fume on the first-crack strength and the flexural toughness of concrete is evaluated. The ten sets of specimens with a steel fiber content of 0, 40, 50, and 60 g/m³ and steel fiber ...
Numerical Simulation-Based Optimization of Contact Stress Distribution and Lubrication Conditions in the Straight Worm Drive

He, Y.; Li, G.F.; Zhao, Y.P.; Sun, Y.; Jiang, G.Z. (Проблемы прочности, 2018)

Tooth contact area optimization/meshing of the straight worm pair is vital for improving its operation efficiency. Geometric parameters of a worm helicoid were derived via the gear meshing theory using the equations of the ...
Study on the Failure Mechanism of the Polymorphic Mixture for Remanifactured Machinery Parts

Liu, C.H.; Li, W.Y.; Rao, W.Z.; He, K. (Проблемы прочности, 2018)

The polymorphic mixture failure mode for multiple heterogeneity of remanifactured (RM) machinery parts makes it difficult to assess their lifetime. The Weibull distribution failure model of RM parts (substrate, coating ...
Fracture Characteristics of B1500HS Steel Hot Blank Parts

Hou, H.L.; Li, H.P.; He, L.F. (Проблемы прочности, 2018)

Warm and hot blanking processes were developed for solving problems in piercing and trimming of press-hardened parts, some fine blank parts with comprehensive mechanical properties could be produced by hot blanking. To ...
Effect of a Nonuniform Radial/Axial Tip Clearance on the Flow Field in a Mixed-Flow Pump

Li, W.; Ji, L.L.; Shi, W.D.; Ping, Y.F.; Zhou, L.; Jiang, X.P. (Проблемы прочности, 2018)

The effect of a nonuniform radial/axial tip clearance on the flow field in a mixed-flow pump was studied by numerical simulation of the unsteady flow in the pump with two tip clearance shapes using the standard Reynolds ...
Properties and Applications of the Electrohydraulic Servosystem of the Hydraulic Excavator

Jia, W.H.; Yin, C.B.; Li, G.; Sun, C.L.; Wang, C.; Feng, H. (Проблемы прочности, 2018)

The service of a hydraulic excavator is complicated by poor environment. The safety and stability of the control system are influenced by external factors. The object of the study is the electrohydraulic servosystem of the ...
Numerical Simulation of the Thermomechanical Behavior of a Hot Stamping Die

Jiang, Q.Y.; Zhao, H.Y,; Yan, H.F. (Проблемы прочности, 2018)

For studying the temperature field of hot stamping, the effect of the distance between cooling pipes, the distance between the cooling pipe and mold surface, and the water cooling pipe diameter were evaluated with ANSYS ...
Surface Effect on the Nanowire Forest Indentation

Yang, F. (Проблемы прочности, 2018)

The surface effect on the mechanical behavior of a nanowire forest indentation is theoretically studied. The use of a large-radius spherical indenter revealed a complex deformation pattern of the nanowire forest. The ...
Structural Strength and Service Life of the Extrusion Forming Die for Agricultural Engine Piston Heads

Yang, L.Q.; Lv, Q.Q.; Zhang, H.M.; Zhu, C H.; Wang, W.Z. (Проблемы прочности, 2018)

Three-tier high-strength prestressed combination concave dies are designed to manifacture highpower corn combine harvester engine piston heads. This design integrates the advantages of traditional casting or hot die forging ...
Isothermal Fatigue and Creep-Fatigue Interaction Behavior of Nickel-Base Directionally Solidified Superalloy

Haq, A.U.; Yang, X.G.; Shi, D.Q. (Проблемы прочности, 2018)

The creep-fatigue interaction in directionally solidified nickel-base superalloy was analyzed with the modified Chaboche-based unified viscoplasticity constitutive model. The model features the anisotropic material behavior, ...
Electron Backscatter Diffraction Analysis of the Microstructure Fineness in Pure Copper under Torsional Deformation

Wang, C.P.; Fan, J.K.; Li, F.G.; Liu, J.C. (Проблемы прочности, 2018)

Torsional deformation is regarded a promising deformation procedure to prepare the gradient structural materials. Pure copper was subjected to large plastic strains in torsion. Electron backscatter diffraction analysis was ...
Prediction of a High Temperature Bonding Condition at the Interface for the Hot-Rolled Stainless Steel Clad Plate on Rolling

Guan, B.; Chen, B.Y.; Zang, Y.; Qin, Q. (Проблемы прочности, 2018)

The stainless steel-carbon steel clad plate was investigated using the theoretical analysis of various factors influencing the high-temperature interfacial bonding during its rolling. Phenomenological prediction analysis ...

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